#66BE2D#66BE2D

#66BE2D is a light, vivid yellow-green. Relative luminance 0.398; OKLCH L 71.9% C 0.194 H 136.1°. Best body text is #000000 at 8.97:1 contrast (WCAG AA passes).

Color values

HEX	#66BE2D
RGB	rgb(102, 190, 45)
HSL	hsl(96, 62%, 46%)
HSV	hsv(96, 76%, 75%)
CMYK	cmyk(46.3%, 0%, 76.3%, 25.5%)
CIE-LAB	lab(69.36, -50.28, 60.41)
CIE-LCH	lch(69.36, 78.59, 129.77°)
OKLab	oklab(71.91% -0.1401 0.1348)
OKLCH	oklch(71.91% 0.194 136.1)
XYZ	xyz(24.3660, 39.8396, 8.8880)
Luminance	0.3984 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BE2D #852DBE

analogous

#AEBE2D #66BE2D #2DBE3D

triadic

#66BE2D #2D66BE #BE2D66

tetradic

#66BE2D #2DAEBE #852DBE #BE3D2D

square

#66BE2D #2DAEBE #852DBE #BE3D2D

split-complementary

#66BE2D #3D2DBE #BE2DAE

monochromatic

#315B16 #4B8D21 #66BE2D #86D652 #A9E284

Accessibility & contrast

On white

2.34

#66BE2D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.97

#66BE2D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BE2D

8.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BE2D	#FFFFFF	#000000	##000000
##66BE2D	1.00	2.34	8.97	8.97
#FFFFFF	2.34	1.00	21.00	21.00
#000000	8.97	21.00	1.00	1.00
##000000	8.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C5AE08

Deuteranopia (green-blind)

#B9A73D

Tritanopia (blue-blind)

#62B7A3

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #66be2d;
/* rgb */ color: rgb(102, 190, 45);
/* oklch */ color: oklch(71.9% 0.194 136.1);

Tailwind

colors: {
  custom: {
    50: '#99d271',
    500: '#66be2d',
    950: '#000000',
  },
}

SCSS

$custom: #66be2d;
$custom-light: #99d271;
$custom-dark: #000000;

JSON

{
  "hex": "#66be2d",
  "rgb": {
    "r": 102,
    "g": 190,
    "b": 45
  },
  "hsl": {
    "h": 96.414,
    "s": 61.702,
    "l": 46.078
  },
  "oklch": {
    "l": 0.71907,
    "c": 0.19438,
    "h": 136.1
  },
  "luminance": 0.39841
}

Semantic roles & 50–950 ramp

primary

#66BE2D

secondary

#AC7CCB

accent

#43E5A5

background

#F9FDF7

surface

#F2FAED

border

#CCD3C8

text

#0F1408

muted

#7E837B

Preview Lab

Preview with #66BE2D

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →